[jira] [Updated] (DRILL-230) Build a sampling range partitioner

["Steven Phillips (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Phillips updated DRILL-230:
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    Attachment: DRILL-230.patch

> Build a sampling range partitioner
> ----------------------------------
>
>                 Key: DRILL-230
>                 URL: https://issues.apache.org/jira/browse/DRILL-230
>             Project: Apache Drill
>          Issue Type: New Feature
>            Reporter: Jacques Nadeau
>            Assignee: Steven Phillips
>         Attachments: DRILL-230.patch
>
>
> Create a new operator that caches a number of record batches and then coordinates across the cluster on the distribution of partitioning keys to try to determine a reasonable set of range partitions.  The outgoing stream should include a partition key that is equal to the width of the receiving fragment.
> - histogram or similar should be held in the distributed cache
> - need to figure out the logic for how long to wait before the partitioning estimate is good enough.  
> - need to update the partitioning sender so that we can drop the partitioning column rather than sending it onward.



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